| Year | Change |
| 1950-(1st year) | Continuous growth |
| 1969 (20th year) | 9% |
| 1975-1977 (26th-28th years) | 10%; 9% |
| 1979 (30th year) | Tanker depression; multiple oil price rises |
| 1981-1987 (32nd-39th years) dry cargo depression | Low or negative growth rates |
| 1989 (40th year) | Fleet’s growth returned, 1.8%; lower growth rates than before 1975 |
| 1993 (44th year) | 6% (good year) |
| 1994-2008 | Matters improved |